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/***********************************************************************//**
* @file lpc17xx_pinsel.c
* @brief Contains all functions support for Pin connect block firmware
* library on LPC17xx
* @version 2.0
* @date 21. May. 2010
* @author NXP MCU SW Application Team
**************************************************************************
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* products. This software is supplied "AS IS" without any warranties.
* NXP Semiconductors assumes no responsibility or liability for the
* use of the software, conveys no license or title under any patent,
* copyright, or mask work right to the product. NXP Semiconductors
* reserves the right to make changes in the software without
* notification. NXP Semiconductors also make no representation or
* warranty that such application will be suitable for the specified
* use without further testing or modification.
**********************************************************************/
/* Peripheral group ----------------------------------------------------------- */
/** @addtogroup PINSEL
* @{
*/
/* Includes ------------------------------------------------------------------- */
#include "lpc17xx_pinsel.h"
/* Public Functions ----------------------------------------------------------- */
static void set_PinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum);
static void set_ResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum);
static void set_OpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum);
/*********************************************************************//**
* @brief Setup the pin selection function
* @param[in] portnum PORT number,
* should be one of the following:
* - PINSEL_PORT_0 : Port 0
* - PINSEL_PORT_1 : Port 1
* - PINSEL_PORT_2 : Port 2
* - PINSEL_PORT_3 : Port 3
*
* @param[in] pinnum Pin number,
* should be one of the following:
- PINSEL_PIN_0 : Pin 0
- PINSEL_PIN_1 : Pin 1
- PINSEL_PIN_2 : Pin 2
- PINSEL_PIN_3 : Pin 3
- PINSEL_PIN_4 : Pin 4
- PINSEL_PIN_5 : Pin 5
- PINSEL_PIN_6 : Pin 6
- PINSEL_PIN_7 : Pin 7
- PINSEL_PIN_8 : Pin 8
- PINSEL_PIN_9 : Pin 9
- PINSEL_PIN_10 : Pin 10
- PINSEL_PIN_11 : Pin 11
- PINSEL_PIN_12 : Pin 12
- PINSEL_PIN_13 : Pin 13
- PINSEL_PIN_14 : Pin 14
- PINSEL_PIN_15 : Pin 15
- PINSEL_PIN_16 : Pin 16
- PINSEL_PIN_17 : Pin 17
- PINSEL_PIN_18 : Pin 18
- PINSEL_PIN_19 : Pin 19
- PINSEL_PIN_20 : Pin 20
- PINSEL_PIN_21 : Pin 21
- PINSEL_PIN_22 : Pin 22
- PINSEL_PIN_23 : Pin 23
- PINSEL_PIN_24 : Pin 24
- PINSEL_PIN_25 : Pin 25
- PINSEL_PIN_26 : Pin 26
- PINSEL_PIN_27 : Pin 27
- PINSEL_PIN_28 : Pin 28
- PINSEL_PIN_29 : Pin 29
- PINSEL_PIN_30 : Pin 30
- PINSEL_PIN_31 : Pin 31
* @param[in] funcnum Function number,
* should be one of the following:
* - PINSEL_FUNC_0 : default function
* - PINSEL_FUNC_1 : first alternate function
* - PINSEL_FUNC_2 : second alternate function
* - PINSEL_FUNC_3 : third alternate function
*
* @return None
**********************************************************************/
static void set_PinFunc ( uint8_t portnum, uint8_t pinnum, uint8_t funcnum)
{
uint32_t pinnum_t = pinnum;
uint32_t pinselreg_idx = 2 * portnum;
uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINSEL0;
if (pinnum_t >= 16) {
pinnum_t -= 16;
pinselreg_idx++;
}
*(uint32_t *)(pPinCon + pinselreg_idx) &= ~(0x03UL << (pinnum_t * 2));
*(uint32_t *)(pPinCon + pinselreg_idx) |= ((uint32_t)funcnum) << (pinnum_t * 2);
}
/*********************************************************************//**
* @brief Setup resistor mode for each pin
* @param[in] portnum PORT number,
* should be one of the following:
* - PINSEL_PORT_0 : Port 0
* - PINSEL_PORT_1 : Port 1
* - PINSEL_PORT_2 : Port 2
* - PINSEL_PORT_3 : Port 3
* @param[in] pinnum Pin number,
* should be one of the following:
- PINSEL_PIN_0 : Pin 0
- PINSEL_PIN_1 : Pin 1
- PINSEL_PIN_2 : Pin 2
- PINSEL_PIN_3 : Pin 3
- PINSEL_PIN_4 : Pin 4
- PINSEL_PIN_5 : Pin 5
- PINSEL_PIN_6 : Pin 6
- PINSEL_PIN_7 : Pin 7
- PINSEL_PIN_8 : Pin 8
- PINSEL_PIN_9 : Pin 9
- PINSEL_PIN_10 : Pin 10
- PINSEL_PIN_11 : Pin 11
- PINSEL_PIN_12 : Pin 12
- PINSEL_PIN_13 : Pin 13
- PINSEL_PIN_14 : Pin 14
- PINSEL_PIN_15 : Pin 15
- PINSEL_PIN_16 : Pin 16
- PINSEL_PIN_17 : Pin 17
- PINSEL_PIN_18 : Pin 18
- PINSEL_PIN_19 : Pin 19
- PINSEL_PIN_20 : Pin 20
- PINSEL_PIN_21 : Pin 21
- PINSEL_PIN_22 : Pin 22
- PINSEL_PIN_23 : Pin 23
- PINSEL_PIN_24 : Pin 24
- PINSEL_PIN_25 : Pin 25
- PINSEL_PIN_26 : Pin 26
- PINSEL_PIN_27 : Pin 27
- PINSEL_PIN_28 : Pin 28
- PINSEL_PIN_29 : Pin 29
- PINSEL_PIN_30 : Pin 30
- PINSEL_PIN_31 : Pin 31
* @param[in] modenum: Mode number,
* should be one of the following:
- PINSEL_PINMODE_PULLUP : Internal pull-up resistor
- PINSEL_PINMODE_TRISTATE : Tri-state
- PINSEL_PINMODE_PULLDOWN : Internal pull-down resistor
* @return None
**********************************************************************/
void set_ResistorMode ( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
{
uint32_t pinnum_t = pinnum;
uint32_t pinmodereg_idx = 2 * portnum;
uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINMODE0;
if (pinnum_t >= 16) {
pinnum_t -= 16;
pinmodereg_idx++ ;
}
*(uint32_t *)(pPinCon + pinmodereg_idx) &= ~(0x03UL << (pinnum_t * 2));
*(uint32_t *)(pPinCon + pinmodereg_idx) |= ((uint32_t)modenum) << (pinnum_t * 2);
}
/*********************************************************************//**
* @brief Setup Open drain mode for each pin
* @param[in] portnum PORT number,
* should be one of the following:
* - PINSEL_PORT_0 : Port 0
* - PINSEL_PORT_1 : Port 1
* - PINSEL_PORT_2 : Port 2
* - PINSEL_PORT_3 : Port 3
*
* @param[in] pinnum Pin number,
* should be one of the following:
- PINSEL_PIN_0 : Pin 0
- PINSEL_PIN_1 : Pin 1
- PINSEL_PIN_2 : Pin 2
- PINSEL_PIN_3 : Pin 3
- PINSEL_PIN_4 : Pin 4
- PINSEL_PIN_5 : Pin 5
- PINSEL_PIN_6 : Pin 6
- PINSEL_PIN_7 : Pin 7
- PINSEL_PIN_8 : Pin 8
- PINSEL_PIN_9 : Pin 9
- PINSEL_PIN_10 : Pin 10
- PINSEL_PIN_11 : Pin 11
- PINSEL_PIN_12 : Pin 12
- PINSEL_PIN_13 : Pin 13
- PINSEL_PIN_14 : Pin 14
- PINSEL_PIN_15 : Pin 15
- PINSEL_PIN_16 : Pin 16
- PINSEL_PIN_17 : Pin 17
- PINSEL_PIN_18 : Pin 18
- PINSEL_PIN_19 : Pin 19
- PINSEL_PIN_20 : Pin 20
- PINSEL_PIN_21 : Pin 21
- PINSEL_PIN_22 : Pin 22
- PINSEL_PIN_23 : Pin 23
- PINSEL_PIN_24 : Pin 24
- PINSEL_PIN_25 : Pin 25
- PINSEL_PIN_26 : Pin 26
- PINSEL_PIN_27 : Pin 27
- PINSEL_PIN_28 : Pin 28
- PINSEL_PIN_29 : Pin 29
- PINSEL_PIN_30 : Pin 30
- PINSEL_PIN_31 : Pin 31
* @param[in] modenum Open drain mode number,
* should be one of the following:
* - PINSEL_PINMODE_NORMAL : Pin is in the normal (not open drain) mode
* - PINSEL_PINMODE_OPENDRAIN : Pin is in the open drain mode
*
* @return None
**********************************************************************/
void set_OpenDrainMode( uint8_t portnum, uint8_t pinnum, uint8_t modenum)
{
uint32_t *pPinCon = (uint32_t *)&LPC_PINCON->PINMODE_OD0;
if (modenum == PINSEL_PINMODE_OPENDRAIN){
*(uint32_t *)(pPinCon + portnum) |= (0x01UL << pinnum);
} else {
*(uint32_t *)(pPinCon + portnum) &= ~(0x01UL << pinnum);
}
}
/* End of Public Functions ---------------------------------------------------- */
/* Public Functions ----------------------------------------------------------- */
/** @addtogroup PINSEL_Public_Functions
* @{
*/
/*********************************************************************//**
* @brief Configure trace function
* @param[in] NewState State of the Trace function configuration,
* should be one of the following:
* - ENABLE : Enable Trace Function
* - DISABLE : Disable Trace Function
*
* @return None
**********************************************************************/
void PINSEL_ConfigTraceFunc(FunctionalState NewState)
{
if (NewState == ENABLE) {
LPC_PINCON->PINSEL10 |= (0x01UL << 3);
} else if (NewState == DISABLE) {
LPC_PINCON->PINSEL10 &= ~(0x01UL << 3);
}
}
/*********************************************************************//**
* @brief Setup I2C0 pins
* @param[in] i2cPinMode I2C pin mode,
* should be one of the following:
* - PINSEL_I2C_Normal_Mode : The standard drive mode
* - PINSEL_I2C_Fast_Mode : Fast Mode Plus drive mode
*
* @param[in] filterSlewRateEnable should be:
* - ENABLE: Enable filter and slew rate.
* - DISABLE: Disable filter and slew rate.
*
* @return None
**********************************************************************/
void PINSEL_SetI2C0Pins(uint8_t i2cPinMode, FunctionalState filterSlewRateEnable)
{
uint32_t regVal;
if (i2cPinMode == PINSEL_I2C_Fast_Mode){
regVal = PINSEL_I2CPADCFG_SCLDRV0 | PINSEL_I2CPADCFG_SDADRV0;
}
if (filterSlewRateEnable == DISABLE){
regVal = PINSEL_I2CPADCFG_SCLI2C0 | PINSEL_I2CPADCFG_SDAI2C0;
}
LPC_PINCON->I2CPADCFG = regVal;
}
/*********************************************************************//**
* @brief Configure Pin corresponding to specified parameters passed
* in the PinCfg
* @param[in] PinCfg Pointer to a PINSEL_CFG_Type structure
* that contains the configuration information for the
* specified pin.
* @return None
**********************************************************************/
void PINSEL_ConfigPin(PINSEL_CFG_Type *PinCfg)
{
set_PinFunc(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Funcnum);
set_ResistorMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->Pinmode);
set_OpenDrainMode(PinCfg->Portnum, PinCfg->Pinnum, PinCfg->OpenDrain);
}
/**
* @}
*/
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */
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